Cómo comprobar si un archivo está vacío o no?
Tengo un archivo de texto.
¿Cómo puedo comprobar si está vacío o no?
176
6 answers
>>> import os
>>> os.stat("file").st_size == 0
True
213
Author: ghostdog74,
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2014-12-07 21:22:19
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2014-12-07 21:22:19
import os
os.path.getsize(fullpathhere) > 0
93
Author: Jon,
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2010-03-24 13:05:41
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2010-03-24 13:05:41
Tanto getsize()
como stat()
lanzarán una excepción si el archivo no existe. Esta función devolverá True / False sin lanzar:
import os
def is_non_zero_file(fpath):
return os.path.isfile(fpath) and os.path.getsize(fpath) > 0
57
Author: ronedg,
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2016-05-15 20:39:22
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2016-05-15 20:39:22
Si por alguna razón ya tienes el archivo abierto puedes probar esto:
>>> with open('New Text Document.txt') as my_file:
... # I already have file open at this point.. now what?
... my_file.seek(0) #ensure you're at the start of the file..
... first_char = my_file.read(1) #get the first character
... if not first_char:
... print "file is empty" #first character is the empty string..
... else:
... my_file.seek(0) #first character wasn't empty, return to start of file.
... #use file now
...
file is empty
21
Author: robert king,
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2012-08-10 03:56:17
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2012-08-10 03:56:17
Ok así que combinaré la respuesta de ghostdog74 y los comentarios, solo por diversión.
>>> import os
>>> os.stat('c:/pagefile.sys').st_size==0
False
False
significa un archivo no vacío.
Así que vamos a escribir una función:
import os
def file_is_empty(path):
return os.stat(path).st_size==0
9
Author: Ron Klein,
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2017-05-23 11:33:24
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2017-05-23 11:33:24
Si tiene el objeto file, entonces
>>> import os
>>> with open('new_file.txt') as my_file:
... my_file.seek(0, os.SEEK_END) # go to end of file
... if my_file.tell(): # if current position is truish (i.e != 0)
... my_file.seek(0) # rewind the file for later use
... else:
... print "file is empty"
...
file is empty
0
Author: Qlimax,
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/ajaxhispano.com/template/agent.layouts/content.php on line 61
2018-09-10 13:44:20
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2018-09-10 13:44:20